Turns outaec58a9 did the right thing for /packed/ refs, but didn't workcorrectly on /unpacked/ refs.  So this patch gives unpacked refs thesame treatment.Without the fix here, the test added will cause this traceback:======================================================================ERROR: Check that we find .git as a worktree file and find the worktree----------------------------------------------------------------------Traceback (most recent call last):  File "/home/pjones/devel/github.com/GitPython/git/test/lib/helper.py", line 92, in wrapper    return func(self, path)  File "/home/pjones/devel/github.com/GitPython/git/test/test_repo.py", line 938, in test_git_work_tree_dotgit    self.assertIsInstance(repo.heads['aaaaaaaa'], Head)  File "/home/pjones/devel/github.com/GitPython/git/util.py", line 893, in __getitem__    raise IndexError("No item found with id %r" % (self._prefix + index))IndexError: No item found with id 'aaaaaaaa'Woops.Things I've learned:- test_remote doesn't work currently if you start on a branch.  I think  it never did?- Because of346424d, all *sorts* of stuff in the test suite doesn't  work if you name your development branch "packed-refs"  (This seems like a bug...)Signed-off-by: Peter Jones <pjones@redhat.com>